首页|Exploring high-energy X-ray phase-contrast microscopy at a diffraction-limited storage ring
Exploring high-energy X-ray phase-contrast microscopy at a diffraction-limited storage ring
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
Elsevier
High-energy X-ray microscopy is critical for imaging dense and large-scale materials due to its ability to provide deep penetration and reduced radiation damage. Incorporating phase-contrast imaging enables the visualization of subtle differences in density that traditional absorption techniques cannot detect. Despite these benefits, implementing phase-contrast imaging at high energies (> 70keV) presents significant challenges. The short wavelength of high-energy X-rays reduces spatial coherence and diminishes refraction, thereby limiting phase-contrast effects. The flux of emitted X-ray photons significantly drops at higher energies due to less efficient emission process. All of these challenges degrade X-ray phase-contrast image quality. In this study, we evaluate the feasibility of high-energy X-ray phase-contrast imaging (XPCI) using propagation-based methods. Through rigorous wave propagation simulations, we explored the effects and importance of optimizing the source size and geometrical configurations to enhance image quality. Under optimized conditions at a fourth-generation storage ring, we successfully retrieved phase information of microstructures surrounded by similar materials, such as boron fibers in an aluminum matrix and dual-phase iron. These results provide valuable guidelines for designing high-energy X-ray microscopy experiments, helping to maximize imaging performance while addressing the inherent limitations of using high-energy for XPCI. Ultimately, this study provides essential insights for improving high-energy X-ray microscopy, paving the way for advancing non-destructive testing techniques for a wide range of challenging materials and applications.
High-energy X-ray microscopyPhase-contrast imagingFourth-generation storage ring
Jisoo Kim、Jae-Hong Lim
展开 >
Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
Pohang Accelerator Laboratory, POSTECH, 80 Jigok-ro-127-beongil, Nam-gu, Pohang, Gyeongbuk 37673, Republic of Korea
NETL
NSTL
Elsevier
